CAJ | 학술논문

设计了用于高精度铷原子频标的一种小型化恒温压控晶体振荡器．振荡电路采用了稳定性好的并联型皮尔斯电路方案，采用2级?型LC级联滤波器抑制谐杂波，利用互补对称式金属-氧化物-半导体(CMOS)反相器实施隔离．振荡和放大电路选用了低噪声晶体管．晶体的温度控制在频率-温度曲线拐点处．实现了体积为4 mL晶振样件．晶振的短期频率稳定度为1.8?10-12/s，相噪对铷频标频率稳定度的贡献仅为3.2?10-13?-1/2．
설계료용우고정도여원자빈표적일충소형화항온압공정체진탕기．진탕전로채용료은정성호적병련형피이사전로방안，채용2급?형LC급련려파기억제해잡파，이용호보대칭식금속-양화물-반도체(CMOS)반상기실시격리．진탕화방대전로선용료저조성정체관．정체적온도공제재빈솔-온도곡선괴점처．실현료체적위4 mL정진양건．정진적단기빈솔은정도위1.8?10-12/s，상조대여빈표빈솔은정도적공헌부위3.2?10-13?-1/2．
A small-size oven temperature controlled crystal oscillator for rubidium atomic frequency standards was designed. In the design, a Pierce oscillator circuit, a two step πtype LC filter and a Complementary-Symmetery Metal-Oxicle-Semiconcluctor(COMS) inversion isolator were used. Low thermal noise transistors were employed in the circuit. The temperature of the crystal oscillator was set at the turning point of the frequency-temperature curve. The crystal oscillator was of a volume of 4 mL with a short-term frequency stability of 1.8×10-12/s. The oscillator was of low phase noise, and its fractional frequency stability contribution to a rubidium atomic frequency standard was estimated to be in a level of 3.2×10-13?-1/2.